Sir I am very new to Option market. I want to buy a NIFTY call option just for 1st experience. I want to know the very basic.

((***OI 3,955,950Chng in OI605,625 Volume140,768 IV14.02 LTP64.95 Net Chng-13.60 Bid Qty150 Bid Price64.80 Ask Price65.85 Ask Qty 75***))

above quote is pasted from

Now please guide me if I want to bye only ONE LOT at market price how to place the order.

My broker is ZERODHA.